The bounties in the Bounty Arena were separated into ten ranks.

The bounty for the first rank was 50 thousand saint spirit stones, the second rank was 100 thousand, the third was 200 thousand, and the fourth was 300 thousand. There was a big jump in bounty starting from the fifth rank with 500 thousand saint spirit stones, the sixth was 1 million, the seventh was 2 million, the eighth 5 million, and the ninth 10 million.

The tenth rank was meant for the most supreme of bounties. The diamond of all bounties. They would only appear on the final three days. These bounties were of utmost difficulty and were the penultimate event. The lowest reward for a rank ten bounty was 30 million saint spirit stones, but it was only the starting price. The sky was the limit for a bounty of this rank. It was also the most sought after and exciting event. The bounties before it were nothing but a warm-up. 

To put it in simpler terms, it was to allow the arena lords and assistants to make some money. At the beginning, the arena lords...